This recombinant protein is synthesized using a yeast expression system, chosen for its ability to perform eukaryotic post-translational modifications while maintaining cost efficiency .
Production Details:
| Parameter | Specification |
|---|---|
| Expression System | Saccharomyces cerevisiae (yeast) |
| Purity | >90% (verified by SDS-PAGE) |
| Buffer | Tris-based, 50% glycerol |
| Storage | Lyophilized, -20°C (stable long-term) |
The yeast-derived protein ensures proper folding and functional activity, critical for downstream applications like ELISA and protein interaction studies .
Data from human and rodent UBL4A homologs highlight conserved functions and regulatory mechanisms:
Knowledge Gaps: Structural and mechanistic data specific to the bat UBL4A remain sparse .
Potential Studies:
Crystallography: Resolve 3D structure to identify unique bat-specific domains.
Pathogen Interaction: Explore roles in bat antiviral immunity, given their resistance to viruses like coronaviruses.
Given the specific focus on Recombinant Rhinolophus ferrumequinum Ubiquitin-like protein 4A (UBL4A), here is a collection of FAQs tailored for researchers:
Q: How can researchers analyze data when there are contradictory findings regarding the role of UBL4A in different species?
A: Researchers should employ meta-analysis techniques to pool data from various studies, considering factors like experimental design, species differences, and environmental conditions. Phylogenetic analysis can also help understand evolutionary pressures on UBL4A across species.
Q: What methods can be used to investigate the evolutionary conservation of UBL4A across different vertebrates?
A: Phylogenetic analysis using tools like MEGA or PAML can help assess the evolutionary pressures on UBL4A. By comparing UBL4A sequences across species, researchers can identify conserved regions and infer functional importance.
Q: What are the key considerations for expressing recombinant UBL4A in a heterologous system?
A: When expressing recombinant UBL4A, researchers should consider factors like host cell line choice (e.g., E. coli, mammalian cells), optimal expression conditions (temperature, inducer concentration), and purification strategies to ensure high yield and purity of the protein.
Q: How can researchers differentiate between the functions of UBL4A and its autosomal retrogene UBL4B in vertebrates?
A: By using knockout models for both UBL4A and UBL4B, researchers can assess their individual and combined roles in cellular processes. This approach helps identify any functional redundancy or specificity between the two proteins.
Q: What advanced techniques can be used to study protein-protein interactions involving UBL4A?
A: Techniques such as co-immunoprecipitation (Co-IP), proximity ligation assay (PLA), and mass spectrometry-based proteomics can be employed to identify and characterize UBL4A interactions with other proteins.
Q: How can researchers interpret data on UBL4A's role in immune responses, particularly in dendritic cells and macrophages?
A: By analyzing NF-κB signaling pathways and immune cell activation assays, researchers can determine how UBL4A modulates immune responses. This involves assessing cytokine production, cell proliferation, and survival in the presence or absence of UBL4A.
Q: What methods can be used to compare the function of UBL4A across different species, such as Rhinolophus ferrumequinum and humans?
A: Comparative genomics and functional genomics approaches can be used to align UBL4A sequences and assess functional conservation. Additionally, cross-species expression studies can help identify conserved roles in cellular processes.
Q: How can researchers investigate the potential role of UBL4A in disease models, such as cancer or neurodegenerative diseases?
A: By using disease-specific cell or animal models, researchers can overexpress or knockdown UBL4A to assess its impact on disease progression. This involves analyzing markers of disease severity, cell viability, and molecular pathways affected by UBL4A.
Q: What are the key considerations for determining the structural properties of recombinant UBL4A?
A: Techniques such as X-ray crystallography, NMR spectroscopy, and molecular dynamics simulations can be used to determine the structure of UBL4A. These methods provide insights into its folding, stability, and potential binding sites for other proteins.
| Feature | UBL4A | UBL4B |
|---|---|---|
| Chromosomal Location | X chromosome | Autosomal |
| Expression Pattern | Ubiquitous | Testis-specific |
| Evolutionary Pressure | Under purifying selection | Under strong purifying selection |
| Role in Immune Response | Regulates NF-κB signaling in dendritic cells and macrophages | Not well-defined |
| Role in Spermatogenesis | Dispensable | Dispensable |